X is a normally distributed random variable with mean 40 and standard deviation 9.

What is the probability that X is between 13 and 67?

Write your answer as a decimal rounded to the nearest thousandth.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex